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本帖最后由 yyj 于 2018-1-30 11:01 编辑 3 A. f( c% Q0 P9 P
- [code]EDMA sample test application
# _# |% `1 [0 ]3 ^; [) K9 _0 w - /*
8 @* J4 H6 ^3 M& B/ B4 R - * edma_test.c
3 }4 E' ?$ v/ I/ ?9 S* B& Z - *
9 A8 M! x* U; g+ W - * brief EDMA3 Test Application( j% K( j7 |6 D
- *
" d( t" F4 s) H' M. l! X9 i1 q - * This file contains EDMA3 Test code.
$ x4 t+ h. U' p# A9 \- C: K% ? - *
: l, g) R1 Q% \5 f* T. s( e - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
0 I$ O* v' f- Q2 o2 `$ V8 G - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT4 [* R( U* H" M0 V) p
- * TO CHANGE.
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- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/9 V- D5 o; r1 h
- *& q& S4 G) I2 S+ h
- * This program is free software; you can redistribute it and/or2 x- \& w( H! I9 g9 y" ?
- * modify it under the terms of the GNU General Public License as( S, n! w0 c4 Q
- * published by the Free Software Foundation version 2.
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- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
; f. _2 s+ A( }3 e4 r+ X+ a - * kind, whether express or implied; without even the implied warranty
6 ^0 v* G, u+ l+ m' p9 O - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
" X! J" G8 }) x; y- U$ }8 r0 p - * GNU General Public License for more details.7 R) O( R' z/ h/ Q! J% m8 F
- */
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- #include <linux/module.h>
/ a+ W# }1 b- e6 h* v - #include <linux/init.h>
# V d/ M- j F) K+ E/ v G0 X7 J. U - #include <linux/errno.h>9 U0 s4 f7 a, J
- #include <linux/types.h>
' F0 F2 Z& O7 N( r+ X - #include <linux/interrupt.h>" \! h3 o+ u( `' N# L
- #include <asm/io.h>
: f" m* w! {7 b4 [: X5 q - #include <linux/moduleparam.h>( v- Z/ T0 _, e3 }
- #include <linux/sysctl.h>. Z P5 q" q7 s$ i9 {: a6 [
- #include <linux/mm.h>
4 W& s8 d, F& K5 ?1 j& U# q - #include <linux/dma-mapping.h>
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- #include <mach/memory.h>
1 x+ R* i: w" o2 b - #include <mach/hardware.h>
9 m5 h; ^5 E2 k4 | - #include <mach/irqs.h>' c8 Q7 B; O. E! y/ O% s6 P: I! Z2 e6 b
- #include <asm/hardware/edma.h>2 ?8 |. Z4 O7 O# R
9 u. }0 [# R# E* h- #undef EDMA3_DEBUG, a$ b- F* Q% t6 \7 ^* g ?2 d
- /*#define EDMA3_DEBUG*/: w5 S0 F5 S+ d Z. N
- 1 F1 V' Y6 o( Y6 H! u' [
- #ifdef EDMA3_DEBUG3 o6 O# m: ^ d" l1 [5 _3 [6 S+ z
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
2 ~& p7 n) O0 M9 Z - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)# m3 @. ~! t' d* x+ q& b
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
1 ?3 Z& P, W4 S8 \ f - #else
2 r, M) |9 m8 J: I - #define DMA_PRINTK( x... )
& K% j9 z% }3 J# w7 d, s3 Q - #define DMA_FN_IN
- I! T6 \ t7 v/ E - #define DMA_FN_OUT' g2 W: B9 u9 X9 v3 n( z2 q2 T! O
- #endif& j6 e) S$ O1 E2 p
/ [- }, u: E# x) W- #define MAX_DMA_TRANSFER_IN_BYTES (32768)7 L% W; A# i0 [$ R
- #define STATIC_SHIFT 33 g3 A) W& X) l$ ~( }
- #define TCINTEN_SHIFT 20) T: w* I: C6 D: U9 a9 i8 E
- #define ITCINTEN_SHIFT 21' V- E( G0 x$ p8 K3 N% V: B& ~
- #define TCCHEN_SHIFT 22
8 v* t2 A; @- k. j5 O( b1 ^ n - #define ITCCHEN_SHIFT 23 t; @% X) e+ C) n% p( U# n$ |
- ' Z$ k+ p' f( L3 o& Z v
- static volatile int irqraised1 = 0;
$ P9 E; M' u) O/ l - static volatile int irqraised2 = 0;
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% G+ Y P3 D# N/ H4 _* Q3 I4 {& [7 s: B- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);; V4 o/ _& T* \" k" ~- H
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
3 t4 ?" y; O6 z/ A U a7 W j - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);5 e7 N8 }) S' t: U1 H9 p
- # U) \$ u: e" E* [- X" N! Z* T
- dma_addr_t dmaphyssrc1 = 0;
4 o5 a& w& b0 d - dma_addr_t dmaphyssrc2 = 0;" m4 m: } e1 t( s' e: x- m
- dma_addr_t dmaphysdest1 = 0;
% c. D9 @" ?7 G1 Q - dma_addr_t dmaphysdest2 = 0;
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7 A* m0 J7 @# K1 W- char *dmabufsrc1 = NULL;/ K& s5 M* Y! A$ |
- char *dmabufsrc2 = NULL;
& B3 {; o8 C Y2 y: L+ I. {: Y - char *dmabufdest1 = NULL;
% N* Z$ h+ z/ `/ d5 V - char *dmabufdest2 = NULL;
- e! i* v) u- `2 w# G( I4 v. Q4 O - + ~% Q5 ?9 W( b2 s! i: x
- static int acnt = 512;% F: h/ v4 ^1 I5 B' K% v& P6 Q
- static int bcnt = 8;+ r( C/ I- ]) n0 v3 s
- static int ccnt = 8;9 c4 a. e' y7 `' A) n$ m( Z! d8 b
. A! U- V" b: _" Q- module_param(acnt, int, S_IRUGO);
; K, U5 X2 f4 } - module_param(bcnt, int, S_IRUGO);
8 B0 W' O, v( ?' ], ^. K2 H" R! j5 }( a - module_param(ccnt, int, S_IRUGO);
复制代码 6 {3 u: R1 |1 {
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这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分,我在编译的过程中是用
# E* A' @, Z' v [$ K$ \8 aarm-none-linux-gnueabi-gcc -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译,但是报的错误特别多,我又试着一个函数一个函数往进加,仍然是很多错误。! `, D' H ]* i& i, a# c' y
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。+ I# B! @& `) {- P
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